Go to kakiriko village graveyard and there should be a crawl space crawl through it and he'll be there (after u break the ice in zora village and talk to the queens ghost) talk to him and u get the water tunic so u can get into the water temple( 3rd temple)

Before the 3rd dungeon, he will be bed-ridden, either in Telma's Bar, or in Kakariko (depending on if you completed the transfer mission). After the 4th dungeon, he will be in the room beyond the crawlspace in the Graveyard.

Well, if your in the part where you have to find him so you can get the zora armor, then he is located in kakorrko town (sorry, dont know how to spell it) across the graveyard. Go straite, then you'll go under a hole, then you'll see another room with the prince at his mom's grave. ;-) Good luck.

I think I know what you mean. If you are at the point of the game I think you are, Prince Ralis is at Telma's Bar in Castle Town. He's the Zora boy they were talking about earlier who collapsed, and you might have seen him. If you head into the Castle Town square and head south, then go east down into the little area there, Telma's Bar is at the left. Good luck.